diff --git a/src/renderer/src/components/Sidebar.vue b/src/renderer/src/components/Sidebar.vue
index f788aef..dd7a8fc 100644
--- a/src/renderer/src/components/Sidebar.vue
+++ b/src/renderer/src/components/Sidebar.vue
@@ -222,6 +222,7 @@ const togglePlaylists = () => {
   background: linear-gradient(to right, transparent, var(--color-border), transparent);
   margin: 16px 8px;
   opacity: 0.6;
+  flex-shrink: 0;
 }
 
 /* 区域标题 */
diff --git a/src/renderer/src/components/TopBar.vue b/src/renderer/src/components/TopBar.vue
index 922cba2..8325072 100644
--- a/src/renderer/src/components/TopBar.vue
+++ b/src/renderer/src/components/TopBar.vue
@@ -109,6 +109,7 @@ onUnmounted(() => {
 }
 
 .topbar {
+  box-sizing: border-box;
   height: 64px;
   width: 100%;
   display: flex;